athena% python montecarlo.py
athena% python montecarlo.py 32x32
(99.8046875, 998.7578125, 6897.09765625)
athena% python montecarlo.py 64x64
(99.9755859375, 998.90966796875, 6901.087158203125)
athena% python montecarlo.py 128x128
(99.884033203125, 998.81640625, 6894.224365234375)